UNS N06455 Hastelloy C-4 Seamless Tube for Aerospace and Chemical Industries

In high-performance industries such as aerospace and chemical processing, materials must withstand extreme temperatures, pressure, and aggressive chemicals. UNS N06455 Hastelloy C-4 Seamless Tube is engineered to meet these demands. At DLX, we specialize in producing high-quality, ASTM-compliant Hastelloy C-4 seamless tubes that deliver unmatched performance, durability, and reliability in the most challenging applications.

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Hastelloy C-4, designated UNS N06455, is a nickel-chromium-molybdenum alloy developed for both high-temperature strength and corrosion resistance in oxidizing and reducing environments. Its unique chemical composition allows it to resist a wide range of aggressive media, from strong oxidizers like nitric acid to reducing acids such as hydrochloric and sulfuric acids.

Seamless tubes, produced under ASTM B622 standards, eliminate weld seams, providing enhanced structural integrity. This makes them ideal for applications involving high pressure, temperature, and chemically aggressive environments, which are common in aerospace and chemical processing industries.

DLX ensures that each Hastelloy C-4 seamless tube undergoes strict chemical and mechanical testing to verify composition, strength, and corrosion resistance, guaranteeing a product that performs reliably under demanding conditions.

Specification

item	HC-276	C-22	C-4	B2	B3	N
C	≤0.01	≤0.015	≤0.015	≤0.02	≤0.01	0.04-0.08
Mn	≤1	≤0.5	≤1	≤1	≤3	≤1
Fe	4-7	2-6	≤3	≤2	≤1.5	≤5
P	≤0.04	≤0.02	≤0.04	≤0.04	--	≤0.015
S	≤0.03	≤0.02	≤0.03	≤0.03	--	≤0.02
Si	≤0.08	≤0.08	≤0.08	≤0.1	≤0.1	≤1
Ni	rest	rest	rest	rest	≤65	rest
Co	≤2.5	≤2.5	≤2	≤1	≤3	≤0.2
Ti+Cu	--	--	≤0.7	--	≤0.4	≤0.35
Al+Ti	--	--	--	--	≤0.5	≤0.5
Cr	14.5-16.5	20-22.5	14-18	≤1	≤1.5	6-8
Mo	15-17	12.5-14.5	14-17	26-30	≤28.5	15-18
B	--	--	--	--	--	≤0.01
W	3-4.5	2.5-3.5	--	--	≤3	≤0.5
V	≤0.35	≤0.35	--	0.2-0.4	--	≤0.5

Shape	Size (mm)
Wire	0.5-7.5
Rod/Bar	8.0-200
Strip	(0.5-2.5)*(5-180)
Tube/Pipe	Custom made
Sheet/Plate	Custom made

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Hastelloy C-4 Seamless Tubes are highly versatile and used across multiple critical sectors:

• Aerospace: Ideal for propulsion system components, thermal management systems, and high-temperature pressure lines where material integrity under stress is crucial.

• Chemical Processing: Used in heat exchangers, reactors, and piping systems exposed to mixed oxidizing and reducing agents.

• Petrochemical Industry: Ensures long-term reliability in condensers, reactors, and process lines handling complex chemical mixtures.

• Marine Engineering: Resists seawater corrosion, pitting, and crevice attack, making it suitable for offshore platforms and desalination systems.

• Power Generation: Applied in heat exchangers, flue gas systems, and high-temperature equipment where both corrosion resistance and mechanical strength are required.

• Environmental Systems: Employed in scrubbers, chemical treatment plants, and pollution control devices handling aggressive chemicals.

• Pharmaceutical Manufacturing: Supports sterile and high-purity processes with excellent corrosion resistance.

DLX offers seamless tubes in customized dimensions, wall thicknesses, and lengths to meet the exact specifications of every project, ensuring optimal performance and durability.

The demand for high-performance nickel alloys such as Hastelloy C-4 is growing globally. Several factors drive this trend:

1. Aerospace Expansion: Advanced aerospace applications require materials that maintain structural integrity under high temperature and stress.

2. Chemical Plant Growth: Chemical and petrochemical facilities increasingly handle mixed acid streams, necessitating broad-spectrum corrosion-resistant materials.

3. Marine and Offshore Developments: Seawater-exposed equipment and offshore projects require pitting and crevice-resistant materials.

4. Environmental Regulations: Stricter emission and waste handling rules increase reliance on durable alloys.

5. Pharmaceutical Industry Expansion: The need for high-purity, corrosion-resistant tubing in sterile systems continues to rise.

6. Energy Sector Growth: Power generation plants demand high-temperature, corrosion-resistant tubes for flue gas, steam, and condensers.

DLX is strategically positioned to supply this growing market, leveraging its technical expertise, quality control, and global logistics capabilities.

Comparison Table: Hastelloy C-4 Seamless Tube vs Alternatives

DLX goes beyond supplying Hastelloy C-4 tubes. We offer:

• ASTM Compliance: Every tube meets ASTM B622 standards for seamless nickel alloys.

• Customization: Tubes are produced in a wide range of diameters, wall thicknesses, and lengths tailored to specific projects.

• Quality Assurance: Rigorous chemical and mechanical testing ensures each tube meets performance expectations.

• Technical Guidance: DLX provides expert support on welding, machining, and installation for optimal performance.

• Reliable Logistics: Our global supply chain ensures timely delivery across continents.

• Competitive Value: While high-performance materials command a premium, DLX delivers cost-effective solutions without compromising quality.

This combination of expertise, precision, and customer-focused service positions DLX as a preferred partner for industries relying on high-performance tubing.

When evaluating tubing materials, Hastelloy C-4 Seamless Tubes stand out. Stainless steel 316L, though cost-effective, often fails in high-chloride, high-temperature environments. Hastelloy C276 excels in corrosion resistance but lacks the high-temperature strength provided by C-4.

UNS N06455 Hastelloy C-4 Seamless Tubing combines high-temperature capability with resistance to both oxidizers and reducers, offering a superior solution for aerospace and chemical industries. The seamless construction eliminates weld points, providing maximum reliability under extreme conditions.

The global market for Hastelloy C-4 Tubing is expected to grow steadily due to several industry trends:

• Increasing aerospace and defense applications requiring high-temperature alloys.

• Expansion of chemical and petrochemical plants worldwide.

• Offshore oil, gas, and marine construction projects.

• Environmental protection and pollution control initiatives.

• Pharmaceutical manufacturing requiring corrosion-resistant, high-purity tubing.

DLX is well-equipped to meet this growing demand with its technical expertise, production capacity, and international distribution network.

Conclusion

UNS N06455 Hastelloy C-4 Seamless Tubing offers unmatched performance in high-temperature and chemically aggressive environments. Its superior corrosion resistance, mechanical strength, and seamless design make it ideal for aerospace, chemical processing, petrochemical, and marine applications.

DLX delivers this high-performance tubing with strict quality control, global logistics, and technical support, ensuring that industries can operate efficiently and safely in demanding conditions. Choosing DLX means access to reliable, durable, and high-quality Hastelloy C-4 seamless tubes that meet the most challenging operational requirements.

For more details, pls directly contact us.

About Us:

Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications.

For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.

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FAQs:

Q1: What is UNS N06455 Hastelloy C-4 Seamless Tube?
A1: It is a nickel-chromium-molybdenum seamless tube engineered for high-temperature and aggressive chemical environments.

Q2: Which industries primarily use Hastelloy C-4 Seamless Tubes?
A2: Aerospace, chemical processing, petrochemical, marine engineering, and power generation industries rely on them.

Q3: How does Hastelloy C-4 perform in oxidizing environments?
A3: It exhibits excellent resistance to strong oxidizers like nitric acid, ferric chloride, and chlorine.

Q4: Is Hastelloy C-4 effective against reducing agents?
A4: Yes, it withstands reducing acids such as hydrochloric and sulfuric acids.

Q5: What temperature range can Hastelloy C-4 handle?
A5: The alloy performs reliably up to around 1000°C, maintaining both corrosion resistance and mechanical strength.

Q6: Are these tubes seamless or welded?
A6: DLX provides seamless tubes, ensuring higher structural integrity and eliminating weld-related weaknesses.

Q7: How does Hastelloy C-4 compare to other nickel alloys?
A7: It provides superior high-temperature strength while resisting both oxidizing and reducing chemical environments.

Q8: Why choose DLX for Hastelloy C-4 Seamless Tubes?
A8: DLX offers ASTM-compliant manufacturing, precise quality control, technical guidance, and reliable global supply.